255188973 has 8 divisors (see below), whose sum is σ = 366425248. Its totient is φ = 157039344.

The previous prime is 255188971. The next prime is 255188987. The reversal of 255188973 is 379881552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 255188973 - 2¹ = 255188971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255188971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3271615 + ... + 3271692.

It is an arithmetic number, because the mean of its divisors is an integer number (45803156).

Almost surely, 2^255188973 is an apocalyptic number.

It is an amenable number.

255188973 is a deficient number, since it is larger than the sum of its proper divisors (111236275).

255188973 is a wasteful number, since it uses less digits than its factorization.

255188973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6543323.

The product of its digits is 604800, while the sum is 48.

The square root of 255188973 is about 15974.6353010014. The cubic root of 255188973 is about 634.2891775249.

The spelling of 255188973 in words is "two hundred fifty-five million, one hundred eighty-eight thousand, nine hundred seventy-three".